cmm

#### Center Basic Scan - Wireframe Data Method

Wireframe CAD data also can be used to generate points.

To generate points, click near the desired wire on the center. PC-DMIS highlights the selected wire. It finds the closest point in the wire to the clicked location and completes the values in the list in the BASICSCAN dialog box (Insert | Scan | Center).

- CutVec: This vector is the normal vector of the plane in which the probe remains free as centering happens.

- InitVec: This vector is the approach vector of the probe at the start point.

Type

You can use the following types of centering methods:

- Axis: The start point (S) is projected on the defined axis (A). The resulting point is (SP). The InitVec is projected in the plane defined by the projected point (SP) and the axial direction (A). The direction (N) thus defined is vertical to the axial direction. Thereafter, as centering is performed, the probe’s center point remains in the plane defined by the axial direction and (SP). Centering takes with/against the direction (N) as an input, and the probe tip is free in the direction defined by the axial direction (A) crossing the direction (N).

S = Start point
A = Defined axis/axial direction
SP = Projected start point
N = Direction vertical to the axial direction

- Plane: After the CMM probes the point defined by the start point, it centers with/against the probe direction while remaining free in the plane defined by the CutVec.

For more information about the BASICSCAN dialog box and the center basic scan, see "Performing a Center Basic Scan".